[Cluster-devel] [PATCH AUTOSEL 5.4 10/11] gfs2: fix possible reference leak in gfs2_check_blk_type

[Sasha Levin <sashal@kernel.org>]

From: Zhang Qilong <zhangqilong3@huawei.com>

[ Upstream commit bc923818b190c8b63c91a47702969c8053574f5b ]

In the fail path of gfs2_check_blk_type, forgetting to call
gfs2_glock_dq_uninit will result in rgd_gh reference leak.

Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/gfs2/rgrp.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 2466bb44a23c5..2dfcea5a71153 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -2571,13 +2571,13 @@ int gfs2_check_blk_type(struct gfs2_sbd *sdp, u64 no_addr, unsigned int type)
 
 	rbm.rgd = rgd;
 	error = gfs2_rbm_from_block(&rbm, no_addr);
-	if (WARN_ON_ONCE(error))
-		goto fail;
-
-	if (gfs2_testbit(&rbm, false) != type)
-		error = -ESTALE;
+	if (!WARN_ON_ONCE(error)) {
+		if (gfs2_testbit(&rbm, false) != type)
+			error = -ESTALE;
+	}
 
 	gfs2_glock_dq_uninit(&rgd_gh);
+
 fail:
 	return error;
 }
-- 
2.27.0